document.write( "Question 1169347: A city park has a circular goldfish pond with a diameter of 40 metres. Park officials want to surround the pool with a 100 centimetre-wide cement walk. Find the volume of cement needed for this project, to the nearest tenth of a cubic metre, if the layer of concrete is to be 20 centimetres deep \n" ); document.write( "
Algebra.Com's Answer #794024 by josgarithmetic(39630)\"\" \"About 
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The AREA of the path, \"pi%2841%5E2-40%5E2%29\", in square meters.\r
\n" ); document.write( "\n" ); document.write( "Thickness top to bottom is 0.2 meters, so volume of the path is \"%280.2%29%28pi%29%2841%5E2-40%5E2%29\", in cubic meters. Compute the value.
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